So I want to build a n/a race engine. It's gotta be n/a and a 13b bridgy. I'm not sure what to go with. I've been planing to just rebuilt a gsl-se with some bridges in it. I was thinking a 4 port 13b with s5 rotors. What would I need to make that work. Who's done this I want 220whp...

you dont need a bridge to do 220whp

do a search in the engien forum, there is plenty to read about

Have you thought about going 13B Peripheral port. It's a N/A motor and you can get about 300HP. Run it with 51 IDA webber or if you've got the cash fuel injected.



Mike

I'd rather bridge. I love the sound. It's going to be a race car but It'll be street driven every weekend. From what I've found 280 was the wheel limit with PP's huh... It's hard to find bridge 13b info. It's all about 12a's...

The highest power out of a PP I've ever heard of was 350 fwhp. That's quite a bit and really pushing it. It seems that once you get into a good amount of port overlap, they all start sounding quite similar. There isn't really anything different about bridge porting a 12A vs a 13B. IF all you are looking for is 220 rwhp, just do a small bridge. There is no need to go too big because you start getting into unreliable as you cut into the water jacket.

okay we'll there are 8 different 13b's which would be the best to bridge port, or would a hybrid be best? Thats my simple question...

[quote name='Hyper4mance2k' date='Aug 27 2005, 03:12 AM']okay we'll there are 8 different 13b's which would be the best to bridge port, or would a hybrid be best? Thats my simple question...


[/quote]





Your simple question requires more information...#1: What is your budget, cash on hand to plunk down?

bidge port , id not go to a big bridge but a small would work just fine then run the 10-1 rx8 rotors. havent heard anyone with that set up yet, hell if ito can make 240 whp in the 8 why not try a 6 port with them rotors and a small bridge.

Money is not an object since this is going to be a longterm race project. I think I'mjust going to port and bridge some 12a end housings and put those in place of my 6port housings on my gslse block. then I'd have a bridgy 13b...

Money is always an object, and, as said before, 220 the the street is not difficult to make, wouldn't take a large amount of cash. Huge, dirty overlap ports aren't always the endall in making useful power, there's a lot to be said about the shape of the runners as well...